.img_box {
    width: 400px;
    position: relative;
    cursor: crosshair;
}

.img_box img {
    width: 100%;
    border-radius: 10px;
}

.img_box .img_btns img {
    width: 80px;
    float: left;
    box-sizing: border-box;
    border: 2px solid white;
}

.img_box .img_btns .active {
    border-color: rgb(110, 73, 110);
}

.img_box .big_img_box {
    position: absolute;
    top: 0px;
    left: 402px;
    width: 480px;
    height: 480px;
    overflow: hidden;
    z-index: 100;
    border-radius: 10px;
}

.img_box .mark {
    width: 260px;
    height: 260px;
    position: absolute;
    top: 0;
    left: 0;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
}

.img_box .big_img_box img {
    width: 760px;
    position: absolute;
    left: 0;
    top: 0;
}
.boxs{
    width: 1200px;
    height: 500px;
}
.er{
    position: relative;
    float: right;
    right: 360px;
    top: -220px;
}
.er p{
    height: 40px;
}
.er button{
    width: 100px;
    height: 50px;
}